Pontoon-crane.



` G. H. HULBTT.

PONTOON CRANE. APPLIGATIOH IILEJ AUG. 28, 1908.

,Patented May 31, 1910.

3 SHEETS-SHEET 1.

MESQSM Allume] G. H. HULETT.

PONTOON CRANE.

APPLIOATION FILED AUG. 28, 1908.

60,224; Patented May s1, 1910. s axxus-SHEET z Q fw j f v d Allorfzey G.HULETT. PoNTooN CRANE. APLIGATIOF'IILED AUG. 28, 1208.

Patented May 31, 1910.

8 BHEETB-BHBBT 3.

I+ JNVENTOR l EAHarney.

tainnew and useful i' Y' PATENT? ormoni l @genza-5 Be it known thatL-.Gnoncn HENRY HU- Aof Cleveland, in the county of Cuya# "hogaand Stateof Ohio, .have invented cer- Improveinents in Pontoon-. Cranes; and I doAhereby"declare the follovving'to beya full, clear, and exact de'- -g-sc riptionjof theinvention, such asvill cli- ,A .ablepthers'sklled inthe art to which 1t appertain'stonntkeand use 'the' same. My pinventionrelatesto an improvement in pontoon craiif..s,' tlic:object-y being toso lo: catetlie crane'witli relation to the pontoon, i'is ,t .pl )tainthe highest possible stability-of thefpontoon.' Afurtlier object isto'provide-automatic-A ally A controlled the-iveight-offtlieloadcarriedfby the booin.

` :ith theseobjects'in view my invention consistsiina crane ino'iintedjto turn anda counterbalance movable in a'plaiieb'eloiv the ,siirfaceoftliewater of flotation.

..invention'-fui'tlier consists vin a p o'ntbi'i,"a' cranecarriedthereby, the hase of the cranefbeing in -a plane below thev deck of thepontoon, a f ycounterweight lmovable' Within the. pontoon and automatic'devices'actuated indirectly by the weight 'of the load forcontrollingthe movements of' `the counteryginventionfurther .consists in the partsand combination of parts as will be more l fully --.dcscribcdand pointedout in the claims..- r i; In theaccoinpanying drawings, Figure 1 is aview -inside elevation of a vpontoon crane in plan o he same, and Fig. 3'is a diagram of the'; counterwei'ght andinanual and auto-' maticdevicesfor actuating the same.

. 1. represents a po'ntoo'ny'and 2 the crane,`

the latter comprising a base?) V'and a boom 4. L The pontoon 1 is rectanlar'in shape, and' is provided init' deck etween its transy 5' 9i'-nearer one end' verse center. and .one en .than the other, n rithanAopening lcircular" .in formfthrough 'which -t ofthe base'f3.o'f .thecrane v2 protrudes. .Thisreferably base is 'circular as shown-in Fig. 2and is.

- ron'roorr-canina.A f-

l' Speicationprmetters Patent. Patented May f 'Aplincan mea August 2s,isos. seriai No. 450,765.1 v

- bas-e Sand as before cirplainedprojects up#A projects, and a, suitableeneine,

means for countei'balancing which thc trolley embodyintg my invention.Eig. -2 is a'view wonen-minar niinnrr, jorcLi-ivEI,AND, onIo, AssreNor.To THE wEnLMAN-SEAVER- I MORGAN corirANY, or CLEVELAND, omo.. v

Wardly through the opening vin the'deck of the pontoon, ,and is thenexpanded or en- 4 larged as shown 'in Fig.

nient of.` the booiii'or j'ib 4.

The opening' in the deck of is provided with, an upwardl flange 8through which the neck the I pontoon, projecting and gearing areprovided wherebytlie. ase boom'or jib may be rotated so as to carry thefree 'end of the hoorn carrying the hoist chain over either side or endofthe pontoon.

" 'The crane 2 may be of any approvedforin but the purposes pass andisalso pro-. vided on its under side els. This boom is pivoted at. 16 tothe base 3 and isprovided with the nuts 17 which are engaged by screws1S neck of the bas.; 3. These screws are geared torotate i'n unison, andwhen rotated, o 80 crate to raise orlower the Aouter end of't e boom.'

Located oir-'the baseii. Within the pontoon.

1 a pair-ofho'isting en ines. jThese ens gines arelocated 'on thethereof removed from thcfoveihanging boom so as to act as coiiiiterweiglit forI the latter.

Frpm the drums 18 of these engines, cables 14 are led over suitablesheaves on the boom,

and Aaround sheaves 13 at the free end of tlie 90 boomand down .andaround sheaves in the lhoist blockll and then up to the boom to whichthe free ends are Aattached in the usual n'ianner.

' The boilers 20 are located .within the 95" I pontoon at the rear endthereof a osition to 'counterbalance the weight o the crane. j Therotating base also carries the actuating the auxiliary 'trolley 15,which as before ex'ilained is 10ov ,mounted e neckv 3L engine and drumfor to travel on the tracks 14 on the boom 7, and isemployed-fortransfer'ring lighter articles. i'

Thei pontoon is provided tra'iiisve'rsel); its" "ig, I length' atitsirear end with the' trackw ay 2 2 l05 -on Which-the counterwei'ght'23travels. "-Q

For the purpose` of pro ellin 'the couln'jsf ht 23 and'for control ingte movements.

vWei' of gie 'saine the devices now tobe-desc1"ibed'l' will :be employedAn electric of the crane carrying the ofillustra tion l have shown itin' skeleton form, and is provided at its I 'extreme outer end withsheaves 13 over Vwhich thelioist chains 14 with tracks 14 'oni I orauxiliary hoist 15 trav'- 15 pivoted at 20 to `tlie r ase on the end 85vmotor 24 110 befmounted directly "u on counterweight:

and operate in' any o the well own ways to 'propel theacounterwei ht or'steadjof mounting the motor upon t e counterweight; it may be located onthe base 3 and' connected in any. suitable manner with said counter--wei ht for pijo elling the latter. A` magnetv'ica y o erate controller26 for the motor maybe -coated jupon .the counterweight andAconnected-by conductors 27-28 and trolley wheels with the leads 29-30froinany convemfent source of electrical energy. A man-- ually operatedcontroller 31.is rovided, and

` comprises a suitable support 'rtwo pairs .of contact 'strips 32- 33andf31-35, and a ".lever 36 having 'arcontact plate 37 for con- ;nectingthe contact strips of the respective pairs of strips: Conductors 38-39are connected with the contact strips -33 and 35 and these conductorsare'connected with trolleywires L10-41. Trolley. wheels 4t2-.43'A areadapted to-travel in contactwith said'wi'res and these trolley wheelsareconnected by conductors 441-45 withv the terminals .of a

reversing Switch-46, the'l other terminals of 'said s witchbeingconnected with ,the controller 26. The switch 46 may b e geared to' themoving mechanism'r it may be o erated byvcams or other devices at eachen of the trackwa 22 6x1 which the counterwei ht 234V runs. y he switch46' thus acts as a, limit switch and also foilrevers" the motor, Thecontactstrips 32-320 'the switch 31 -are electricallyconnected-together, andthe strip 34 is connected, byja conductor 47 withthe contact -block 48 ofa double throw a conductor 'with'the lead 33.

switch, the' lever 49 'of which is'connected 'by A pendulum 5.1.ismounted in any-convenf rient' position' on the apparatus, and carries atits free end, 4Contact plates 52-5 3,dis5 y posed between pairs 54-55-and 56-57 of contact iinger`s. The 'fingers 55-'57- are electricallyconnected together 'and electrically connected withithe contact block 58of the double throw switch, The contact linger ductor4 38, and thecontact linger Y56 is connected yby-a'wire 60, with the condutor39.

It it apparent that whenthe switch lever 4:9 is closedon the contactblock 58, the tilting of the pontoon will cause the' pendulum i' switch46 and motor 2.4, will thus 51 to swing. and connect one .or the ,otherpair of contact fin ers. The circuit which includes the control er 26,reversin or limit and the motor caused to loperatev 'to' propel thecounterweight 23 from one end of the' 'motor circuit, so that the motorwill operate closed,

to run thel amici-,mei ht'back' to' the-'other endl of,- its trackway'w' en the pontoon z suiiic'ently inthe opposite direction to causethe-,pendulum to coperate with .the other pair-ofcontact lingersl andthus again close the circuit.

When :a load .is taken. upon' the boomand'Y 'the latter' turned, itwillcause al certain and predetermined amount of movement. o'f the' lpontoon :in `the direction of' the loa'd'. The' fpendulum,swinging inthe same direction,

would [record this movement and afterthe' A Apdetermined amount 'ofmovement 'has' i1 reached., the -pendulumwill close the circuit'l asbefore explainedand thus cause terweight^23 toward the'pppositesideofthe ontoon, vthu's balarming the pontoon vand oadedbooi'n. IWhen'the load i'sgradually released from/the end of the boom, the pon- @5' Atooii will rise at'the-side Afrom .which boom projects and lower' on the-o posite 1 side and when l,it-'has passed the horizontal osition apredetermined extent, the pendum will' ave swung from one'pairofpcontactfingers (thus'opening the` circuit) and' then connect the other pair ofcontact fingers to again close the-circuit. 'The motor ,conl 'nectionshaving been changed by. the opera- "tion of the reversing switch '46, thmotor' will now. operate to move the count'eiweightf l backtoits-original position where; itis depontoon-when'there is s signed tobalance the -no loadmitthe boom.

improvements themovements, of Ithe counfl terweight. 23 for balancin.the pontoon when the crane is loaded an whenfunloaded, 'is'Velectrically controlld,and that lsiich control's automaticgf Should-itbe vdesired toV control the elecvrtiical devices for moving the 'cunterwei'ght 23,- this'can be' accomplished with the use-of' themanually operated switch 31. 'When the switch 31 is employed, the lever49 of the double-'pole switch, wil1 be thrown to iio Amake contact withthe contact' block 4:8,vl

'thus 'closing the circuit to thejswitch 31 and -openng that .portionofgthe circuit :which includes the 'contact fingers 54 --57.

4 vOne of the most impcrtantfeatures of my improvement'is that ofcouiiterweighting the crane. As shownA and vdescribed the base 3 ofthecrane o p osite or in rea'r ofthe lboom is countei'weig ted by theengines, drums and other parts, and this weight together with' themovablel counterweight is 'sufficient to-counterbalance the boom. Byv

supportin the base ofi-thev derrick -oii' the' bottom o the'pontoon, andmounting the engines and cunterweighton the basebalow the water line,the centerv of gravity of the entire craneis ke t at the lowest possiblepoint, and the. ighestistability obtained.- .1 f

80 the operationlof the motor to' move' the counf.' I make no claimbroadly in this application to'a movable c'ounterweight on 'the pon-:and electrically ,controlled means for vmoving said-eounterweig'ht, asthis feature forms 4the subjectmatter of my pending applicationnaaaoaecfiled August 28th,'

.j ltiis evident that -changes in the construc- 1 tion and relativearrangements of the several -partsv'inight befmade without avoiding myinvention and hence Il would' have it stood that I do not restrictmyself to the particularv construction and arrangement of parts shownanddescribed, but;

.Havixigfully deseribedmy invention what I claim as new and desire tosecure by Let- 1. In a floating crane, the combination:

with a. pontoon,' 'of a crane base within the pontoon, a eonnterweight,the latter bemg v1n a plane'below'thewater line of thepontoon',a,boompivoted to the base, and means x35. Y v

therein elow the deck, of a crane mounted.

for'raising and lowering the boom.

Ina. iioating-A crane, fthe combination with -aontoon having a circulartrackway a to rotate on said traclrway -and a movablecounterweightlocated on the pontoon vin al 'plane below the water lineof the latter.

` 3. Ina fioating crane, 4the combination with 'a ontoon 'having acirculartrackway therein` elow 'the deck',.of a 'crane the base p fwhiehis mounted torotate on said track- -way, an'd a counterweight locatedbelow' the deck and mounted to move transversely of.

' thepontoon in rear of the crane.

4. In' a fioating crane, Athe combination with a pontoon having acircular trackwa of a -crane mounted to .rotate on said trac way, and acounterweight mounted on a under# said base, a trackway transversel'pontoon and 'amovable 'weight a apted to' traclrlocated transversely ofthe pontoon,

and ina plane below the water line.

a. In a floating crane, the combina-tion. with a pontoon havinga-circular traekway, of a crane -base mounted to turn on said trackway,a movable counterweight and means automatically operated by the tippingpontoon for controlling the move'- travel en said transverse trackway.

7.' In a iioating crane; the combinationwith a pontoonhaving a circulartrackw'ay below its deck, of a crane base mounted on the trackway, aboom pivoted to said base, means for raising and lowering the boom, anda movable counterweight adapted to 'travel transversely the pontoon and.on a

trackway located ma place below the water line.

8. Ina floatingl crane, the combination `with a pontoon having acircular trackway therein below the deck, o f 4a crane base mountedtoturn onsaid trackway, a boom pivot/ad to saidbase at a point above theon the the boom.

deck, land a counterweight mounted to travel pontoon below the pivotalpoint of In testimony whereof, I have signed this.A

specification 1n the presence oftwo'subsoribingwitnesses.

GEORGE HENRY HULETT.

Witnesses:

HERBERT P. GLIDDEN,

H.v A. PEnoUBET.

